Merge part of branch 'for-next.instantiate' into for-next

7 files changed, 59 insertions, 36 deletions

diff --git a/drivers/fpga/Makefile b/drivers/fpga/Makefile
index 0bff783d1b61..5935b3d0abd5 100644
--- a/drivers/fpga/Makefile
+++ b/drivers/fpga/Makefile
@@ -18,9 +18,9 @@ obj-$(CONFIG_FPGA_MGR_TS73XX)		+= ts73xx-fpga.o
 obj-$(CONFIG_FPGA_MGR_XILINX_SPI)	+= xilinx-spi.o
 obj-$(CONFIG_FPGA_MGR_ZYNQ_FPGA)	+= zynq-fpga.o
 obj-$(CONFIG_FPGA_MGR_ZYNQMP_FPGA)	+= zynqmp-fpga.o
-obj-$(CONFIG_FPGA_MGR_VERSAL_FPGA)      += versal-fpga.o
-obj-$(CONFIG_ALTERA_PR_IP_CORE)         += altera-pr-ip-core.o
-obj-$(CONFIG_ALTERA_PR_IP_CORE_PLAT)    += altera-pr-ip-core-plat.o
+obj-$(CONFIG_FPGA_MGR_VERSAL_FPGA)	+= versal-fpga.o
+obj-$(CONFIG_ALTERA_PR_IP_CORE)		+= altera-pr-ip-core.o
+obj-$(CONFIG_ALTERA_PR_IP_CORE_PLAT)	+= altera-pr-ip-core-plat.o
 
 # FPGA Bridge Drivers
 obj-$(CONFIG_FPGA_BRIDGE)		+= fpga-bridge.o
diff --git a/drivers/fpga/dfl-pci.c b/drivers/fpga/dfl-pci.c
index 717ac9715970..fd1fa55c9113 100644
--- a/drivers/fpga/dfl-pci.c
+++ b/drivers/fpga/dfl-pci.c
@@ -259,6 +259,15 @@ static int find_dfls_by_default(struct pci_dev *pcidev,
 			 */
 			bar = FIELD_GET(FME_PORT_OFST_BAR_ID, v);
 			offset = FIELD_GET(FME_PORT_OFST_DFH_OFST, v);
+			if (bar == FME_PORT_OFST_BAR_SKIP) {
+				continue;
+			} else if (bar >= PCI_STD_NUM_BARS) {
+				dev_err(&pcidev->dev, "bad BAR %d for port %d\n",
+					bar, i);
+				ret = -EINVAL;
+				break;
+			}
+
 			start = pci_resource_start(pcidev, bar) + offset;
 			len = pci_resource_len(pcidev, bar) - offset;
 
diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c
index 599bb21d86af..6bff39ff21a0 100644
--- a/drivers/fpga/dfl.c
+++ b/drivers/fpga/dfl.c
@@ -940,9 +940,12 @@ static int parse_feature_irqs(struct build_feature_devs_info *binfo,
 {
 	void __iomem *base = binfo->ioaddr + ofst;
 	unsigned int i, ibase, inr = 0;
+	enum dfl_id_type type;
 	int virq;
 	u64 v;
 
+	type = feature_dev_id_type(binfo->feature_dev);
+
 	/*
 	 * Ideally DFL framework should only read info from DFL header, but
 	 * current version DFL only provides mmio resources information for
@@ -957,22 +960,25 @@ static int parse_feature_irqs(struct build_feature_devs_info *binfo,
 	 * code will be added. But in order to be compatible to old version
 	 * DFL, the driver may still fall back to these quirks.
 	 */
-	switch (fid) {
-	case PORT_FEATURE_ID_UINT:
-		v = readq(base + PORT_UINT_CAP);
-		ibase = FIELD_GET(PORT_UINT_CAP_FST_VECT, v);
-		inr = FIELD_GET(PORT_UINT_CAP_INT_NUM, v);
-		break;
-	case PORT_FEATURE_ID_ERROR:
-		v = readq(base + PORT_ERROR_CAP);
-		ibase = FIELD_GET(PORT_ERROR_CAP_INT_VECT, v);
-		inr = FIELD_GET(PORT_ERROR_CAP_SUPP_INT, v);
-		break;
-	case FME_FEATURE_ID_GLOBAL_ERR:
-		v = readq(base + FME_ERROR_CAP);
-		ibase = FIELD_GET(FME_ERROR_CAP_INT_VECT, v);
-		inr = FIELD_GET(FME_ERROR_CAP_SUPP_INT, v);
-		break;
+	if (type == PORT_ID) {
+		switch (fid) {
+		case PORT_FEATURE_ID_UINT:
+			v = readq(base + PORT_UINT_CAP);
+			ibase = FIELD_GET(PORT_UINT_CAP_FST_VECT, v);
+			inr = FIELD_GET(PORT_UINT_CAP_INT_NUM, v);
+			break;
+		case PORT_FEATURE_ID_ERROR:
+			v = readq(base + PORT_ERROR_CAP);
+			ibase = FIELD_GET(PORT_ERROR_CAP_INT_VECT, v);
+			inr = FIELD_GET(PORT_ERROR_CAP_SUPP_INT, v);
+			break;
+		}
+	} else if (type == FME_ID) {
+		if (fid == FME_FEATURE_ID_GLOBAL_ERR) {
+			v = readq(base + FME_ERROR_CAP);
+			ibase = FIELD_GET(FME_ERROR_CAP_INT_VECT, v);
+			inr = FIELD_GET(FME_ERROR_CAP_SUPP_INT, v);
+		}
 	}
 
 	if (!inr) {
diff --git a/drivers/fpga/dfl.h b/drivers/fpga/dfl.h
index 53572c7aced0..06cfcd5e84bb 100644
--- a/drivers/fpga/dfl.h
+++ b/drivers/fpga/dfl.h
@@ -89,6 +89,7 @@
 #define FME_HDR_NEXT_AFU	NEXT_AFU
 #define FME_HDR_CAP		0x30
 #define FME_HDR_PORT_OFST(n)	(0x38 + ((n) * 0x8))
+#define FME_PORT_OFST_BAR_SKIP	7
 #define FME_HDR_BITSTREAM_ID	0x60
 #define FME_HDR_BITSTREAM_MD	0x68
 
diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c
index d49a9ce34568..a3595ecc3f79 100644
--- a/drivers/fpga/fpga-mgr.c
+++ b/drivers/fpga/fpga-mgr.c
@@ -148,11 +148,12 @@ static int fpga_mgr_write_init_buf(struct fpga_manager *mgr,
 	int ret;
 
 	mgr->state = FPGA_MGR_STATE_WRITE_INIT;
-	if (!mgr->mops->initial_header_size)
+	if (!mgr->mops->initial_header_size) {
 		ret = fpga_mgr_write_init(mgr, info, NULL, 0);
-	else
-		ret = fpga_mgr_write_init(
-		    mgr, info, buf, min(mgr->mops->initial_header_size, count));
+	} else {
+		count = min(mgr->mops->initial_header_size, count);
+		ret = fpga_mgr_write_init(mgr, info, buf, count);
+	}
 
 	if (ret) {
 		dev_err(&mgr->dev, "Error preparing FPGA for writing\n");
@@ -730,6 +731,8 @@ static void devm_fpga_mgr_unregister(struct device *dev, void *res)
  * @parent:	fpga manager device from pdev
  * @info:	parameters for fpga manager
  *
+ * Return:  fpga manager pointer on success, negative error code otherwise.
+ *
  * This is the devres variant of fpga_mgr_register_full() for which the unregister
  * function will be called automatically when the managing device is detached.
  */
@@ -763,6 +766,8 @@ EXPORT_SYMBOL_GPL(devm_fpga_mgr_register_full);
  * @mops:	pointer to structure of fpga manager ops
  * @priv:	fpga manager private data
  *
+ * Return:  fpga manager pointer on success, negative error code otherwise.
+ *
  * This is the devres variant of fpga_mgr_register() for which the
  * unregister function will be called automatically when the managing
  * device is detached.
diff --git a/drivers/fpga/fpga-region.c b/drivers/fpga/fpga-region.c
index b0ac18de4885..485948e3c0db 100644
--- a/drivers/fpga/fpga-region.c
+++ b/drivers/fpga/fpga-region.c
@@ -18,9 +18,9 @@
 static DEFINE_IDA(fpga_region_ida);
 static struct class *fpga_region_class;
 
-struct fpga_region *fpga_region_class_find(
-	struct device *start, const void *data,
-	int (*match)(struct device *, const void *))
+struct fpga_region *
+fpga_region_class_find(struct device *start, const void *data,
+		       int (*match)(struct device *, const void *))
 {
 	struct device *dev;
 
diff --git a/drivers/fpga/of-fpga-region.c b/drivers/fpga/of-fpga-region.c
index 50b83057c048..ae82532fc127 100644
--- a/drivers/fpga/of-fpga-region.c
+++ b/drivers/fpga/of-fpga-region.c
@@ -28,7 +28,7 @@ MODULE_DEVICE_TABLE(of, fpga_region_of_match);
  *
  * Caller will need to put_device(&region->dev) when done.
  *
- * Returns FPGA Region struct or NULL
+ * Return: FPGA Region struct or NULL
  */
 static struct fpga_region *of_fpga_region_find(struct device_node *np)
 {
@@ -80,7 +80,7 @@ static struct fpga_manager *of_fpga_region_get_mgr(struct device_node *np)
  * Caller should call fpga_bridges_put(&region->bridge_list) when
  * done with the bridges.
  *
- * Return 0 for success (even if there are no bridges specified)
+ * Return: 0 for success (even if there are no bridges specified)
  * or -EBUSY if any of the bridges are in use.
  */
 static int of_fpga_region_get_bridges(struct fpga_region *region)
@@ -139,13 +139,13 @@ static int of_fpga_region_get_bridges(struct fpga_region *region)
 }
 
 /**
- * child_regions_with_firmware
+ * child_regions_with_firmware - Used to check the child region info.
  * @overlay: device node of the overlay
  *
  * If the overlay adds child FPGA regions, they are not allowed to have
  * firmware-name property.
  *
- * Return 0 for OK or -EINVAL if child FPGA region adds firmware-name.
+ * Return: 0 for OK or -EINVAL if child FPGA region adds firmware-name.
  */
 static int child_regions_with_firmware(struct device_node *overlay)
 {
@@ -184,14 +184,14 @@ static int child_regions_with_firmware(struct device_node *overlay)
  * Given an overlay applied to an FPGA region, parse the FPGA image specific
  * info in the overlay and do some checking.
  *
- * Returns:
+ * Return:
  *   NULL if overlay doesn't direct us to program the FPGA.
  *   fpga_image_info struct if there is an image to program.
  *   error code for invalid overlay.
  */
-static struct fpga_image_info *of_fpga_region_parse_ov(
-						struct fpga_region *region,
-						struct device_node *overlay)
+static struct fpga_image_info *
+of_fpga_region_parse_ov(struct fpga_region *region,
+			struct device_node *overlay)
 {
 	struct device *dev = &region->dev;
 	struct fpga_image_info *info;
@@ -279,7 +279,7 @@ ret_no_info:
  * If the checks fail, overlay is rejected and does not get added to the
  * live tree.
  *
- * Returns 0 for success or negative error code for failure.
+ * Return: 0 for success or negative error code for failure.
  */
 static int of_fpga_region_notify_pre_apply(struct fpga_region *region,
 					   struct of_overlay_notify_data *nd)
@@ -339,7 +339,7 @@ static void of_fpga_region_notify_post_remove(struct fpga_region *region,
  * This notifier handles programming an FPGA when a "firmware-name" property is
  * added to an fpga-region.
  *
- * Returns NOTIFY_OK or error if FPGA programming fails.
+ * Return: NOTIFY_OK or error if FPGA programming fails.
  */
 static int of_fpga_region_notify(struct notifier_block *nb,
 				 unsigned long action, void *arg)
@@ -446,6 +446,8 @@ static struct platform_driver of_fpga_region_driver = {
 /**
  * of_fpga_region_init - init function for fpga_region class
  * Creates the fpga_region class and registers a reconfig notifier.
+ *
+ * Return: 0 on success, negative error code otherwise.
  */
 static int __init of_fpga_region_init(void)
 {